1 files changed, 30 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv5.h b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv5.h
new file mode 100644
index 0000000000..7056928856
--- /dev/null
+++ b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv5.h
@@ -0,0 +1,30 @@
+#if !SPC_NOINTERP
+/* Want scale optimized for smulw(y) */
+#define GAUSS_TABLE_SCALE 4
+#endif
+
+#if !SPC_NOECHO
+
+#define SPC_DSP_ECHO_APPLY
+
+enum
+{
+    FIR_BUF_CNT   = FIR_BUF_HALF * 2,
+    FIR_BUF_SIZE  = FIR_BUF_CNT * sizeof ( int32_t ),
+    FIR_BUF_ALIGN = FIR_BUF_SIZE,
+    FIR_BUF_MASK  = ~((FIR_BUF_ALIGN / 2) | (sizeof ( int32_t ) - 1))
+};
+
+/* Echo filter structure embedded in struct Spc_Dsp */
+struct echo_filter
+{
+   /* fir_buf [i + 8] == fir_buf [i], to avoid wrap checking in FIR code */
+    int32_t* ptr;
+    /* FIR history is interleaved with guard to eliminate wrap checking
+     * when convolving.
+     * |LR|LR|LR|LR|LR|LR|LR|LR|--|--|--|--|--|--|--|--| */
+    /* copy of echo FIR constants as int16_t, loaded as int32 for
+     * halfword, packed multiples */
+    int16_t coeff [VOICE_COUNT]; 
+};
+#endif /* SPC_NOECHO */